305 CR Mini Excavator

305 CR Mini Hydraulic Excavator

Overview

The Cat® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

ALL DAY COMFORT
  • Choose either a canopy or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat to help keep you working comfortably all day long.
EASY TO OPERATE
  • Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped as an upgrade option.
STICK STEER TRAVEL MODE
  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!
BIG PERFORMANCE IN A COMPACT DESIGN
  • Strong lift and dig performance helps you get the job done faster. The compact radius design lets you access and work in the tightest areas. Dozer float allows for easy clean up. An angle blade is also an option for finished grading and easier backfilling applications.
SAFETY ON THE JOB SITE
  • Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt are just a couple of the safety features we’ve built into the machine.
SIMPLE SERVICE FOR LESS DOWNTIME
  • Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors.
LOWER OPERATING COSTS
  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.
ALL DAY COMFORT
  • Choose either a canopy or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat to help keep you working comfortably all day long.
EASY TO OPERATE
  • Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped as an upgrade option.
STICK STEER TRAVEL MODE
  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!
BIG PERFORMANCE IN A COMPACT DESIGN
  • Strong lift and dig performance helps you get the job done faster. The compact radius design lets you access and work in the tightest areas. Dozer float allows for easy clean up. An angle blade is also an option for finished grading and easier backfilling applications.
SAFETY ON THE JOB SITE
  • Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt are just a couple of the safety features we’ve built into the machine.
SIMPLE SERVICE FOR LESS DOWNTIME
  • Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors.
LOWER OPERATING COSTS
  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.

Engine

Net Power
45HP
Engine Model
C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
45HP
Note
Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Gross Power - 2,400 rpm - SAE J1995:2014
48.4HP
Stroke
3.9in
Bore
3.3in
Displacement
101in³
Emissions
Meets U.S. EPA Tier 4 Final emission standards.

Weights

Operating Weight
12688lb
Minimum Operating Weight with Canopy*
11016lb
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Minimum Operating Weight with Cab*
11234lb
Maximum Operating Weight with Cab**
12688lb
Maximum Operating Weight with Canopy**
12469lb
Note (2)
**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Dimensions - Long Stick

Dig Depth
144.5in
Stick Length
63in
Track Width
78in
Maximum Blade Depth
23.4in
Maximum Dump Clearance
151.4in
Boom Swing - Left
615mm
Boom Swing - Right
34.1°
Swing Bearing - Height
24.4in
Boom Height - Shipping Position
74.6in
Boom In Reach
101.6in
Maximum Reach
235.8in
Track Belt/Shoe Width
15.7in
Maximum Reach - Ground Level
229.7in
Maximum Blade Height
15.2in
O/A Shipping Height
100.4in
Tail Swing without Counterweight
43.1in
O/A Undercarriage Length
101.8in
Tail Swing with Counterweight
47.2in
Vertical Wall
100.8in
Note
*Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length*
210.2in
Maximum Dig Height
210.8in
Ground Clearance
13.2in

Swing System

Boom Swing - Left
72 Degrees
Machine Swing Speed
9r/min
Boom Swing - Right
50 Degrees

Dimensions - Standard Stick

Maximum Dig Height
205.3in
Maximum Blade Height
15.2in
Dig Depth
134.6in
Boom Swing - Right
34.1°
Maximum Reach - Ground Level
220.1in
Tail Swing without Counterweight
43.1in
Boom Height - Shipping Position
71.7in
Maximum Blade Depth
23.4in
Maximum Reach
226.6in
Boom Swing - Left
24.2°
Overall Shipping Length*
208.9in
O/A Undercarriage Length
101.8in
Swing Bearing - Height
24.4in
Stick Length
53.2in
Track Belt/Shoe Width
15.7in
Boom In Reach
101.2in
Vertical Wall
91.9in
Tail Swing with Counterweight
47.2in
Maximum Dump Clearance
145.7in
O/A Shipping Height
100.4in
Note
*Overall Shipping Length depends on blade position during shipment.
Ground Clearance
13.2in

Service Refill Capacities

Hydraulic Tank
16gal (US)
Fuel Tank
17gal (US)
Engine Oil
1.6gal (US)
Hydraulic System
20gal (US)
Cooling System
2.9gal (US)

Travel System

Ground Pressure - Minimum Weight
4psi
Maximum Traction Force - Low Speed
11353lbf
Ground Pressure - Maximum Weight
4.7psi
Travel Speed - Low
1.7mile/h
Maximum Traction Force - High Speed
5553lbf
Travel Speed - High
3.1mile/h
Gradeability - Maximum
30 degrees

Blade

Angle Blade Width
78in
Straight Blade Height
15.4in
Straight Blade Width
78in
Angle Blade Height
15.7in
Angle Blade - Left
25 degrees
Angle Blade - Right
25 degrees

Sound

Average Exterior Sound Pressure (ISO 6395:2008)
97dB(A)
Note
European Union Directive "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008)
76dB(A)

Hydraulic System

Auxiliary Circuit - Secondary - Pressure
3843psi
Pump Flow at 2,400 rpm
35gal/min
Operating Pressure - Swing
2901psi
Operating Pressure - Travel
3843psi
Auxiliary Circuit - Secondary - Flow
7gal/min
Digging Force - Stick - Standard
6362lbf
Auxiliary Circuit - Primary - Pressure
3843psi
Auxiliary Circuit - Primary - Flow
21gal/min
Digging Force - Bucket
11061lbf
Operating Pressure - Equipment
3843psi
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Long
5665lbf

Certification - Cab and Canopy

Top Guard
ISO 10262:1998 Level I
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997

Weight Increase from Minimum Configuration

Counterweight
534lb
Long Stick
75lb
Steel Tracks with Pads
827lb
Angle Blade
225lb

Standard/Optional Features

Standard Equipment:

  • Engine
    • Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final)
    • Automatic Engine Idle
    • Automatic Engine Shutdown
    • Automatic Two Speed Travel
    • Fuel Water Separator
    • Power on Demand (not available in all regions)
    • Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
  • Hydraulics
    • Smart Tech Electronic Pump
    • Accumulator
    • Automatic Swing Brake
    • Auxiliary Hydraulic Lines
    • One and Two Way Auxiliary Flow
    • Continuous Auxiliary Flow
    • Auxiliary Line Quick Disconnects
  • Operator Environment
    • Canopy or Cab
    • Top Guard ISO 10262:1998 Level I
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Stick Steer Mode
    • Travel Cruise Control
    • Control Pattern Changer (optional in some regions)
    • Adjustable Wrist Rests
    • Washable Floor Mat
    • Travel Pedals and Hand Levers
    • Machine Security
    • Machine Security – Standard Key with Pass Code
    • Fabric Suspension Seat (Cab only)
    • Vinyl Suspension Seat (Canopy only)
    • Hydraulic Lockout – All Controls
    • Retractable High Visibility Seat Belt (75 mm/3 in)
    • Coat Hook
    • Cup Holder
    • Storage Pocket
    • Skylight
    • Mounting Bosses for Front
    • Signaling/Warning Horn
    • Interior Light (Cab only)
    • Boom Light, Halogen (not available in all regions)
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Hour Meter with Wake Up Switch
      – Jog Dial (cab only)
  • Undercarriage
    • Rubber Belt (400 mm/15.7 in)
    • Dozer Straight Blade
    • Dozer Blade Float
    • Tie Downs on Track Frame
  • Boom, Stick And Linkages
    • One Piece Boom (2716 mm/106.9 in)
    • Standard Stick (1351 mm/53.2 in)
    • Front Shovel Capable – Pin-On
    • Thumb Ready
    • Certified Lifting Eye
  • Electrical
    • 12 Volt Battery
    • Software (machine and monitor)
    • Maintenance Free Battery
    • Battery Disconnect
    • 12 Volt Power Socket
    • Travel Alarm (optional in some regions)

Optional Equipment:

  • Operator Environment
    • Cab with Air Conditioning
    • Cab with Heater
    • No Travel Pedals and Hand Levers (optional in some regions)
    • Machine Security – Push to Start with Key Fob/Pass Code
    • LED Front Lights
    • LED Front and Rear Lights
    • LED Boom Light
    • Mirrors, Left, Right and Rear
    • Camera
    • Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
    • Next Generation Advanced Monitor
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 and IP69K)
      – Numeric Security Code
  • Undercarriage
    • Steel Track (400 mm/15.7 in)
    • Steel Track with Rubber Pads
    • Angle Blade
  • Boom, Stick And Linkages
    • Long Stick (1601 mm/63.0 in)
    • Front Shovel Capable – Dual Lock Manual Coupler
    • Front Shovel Capable – Hydraulic Coupler
    • Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Bucket Divert Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Hydraulic Quick Coupler Lines
  • Electrical
    • Product Link PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
  • Guarding
    • Polycarbonate Half Height Front Guard (Canopy only)
    • Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
    • Heavy Duty Front Guard ISO 10262:1998 Level II
    • Heavy Duty Top Guard 10262:1998 Level II (Cab only)
  • Other
    • Bio Oil Capable
    • Eco Drain
    • Water Jacket Heater
    • Counterweight (242 kg/534 lb)

See how 305 CR compares against frequently compared products

305 CR

Net Power
45 HP
Operating Weight
12688 lb
Engine Model
C1.7 Turbo
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